Raisecom Technology Co., Ltd
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6. F & Q
If there is any problem during installation and operation, please try the following solutions.
If the problems still cannot be solved, please contact distributors for technical support.
Power/Error code test indicator (PWR/PAT) is not on
Answer: Power supply fails. Check whether the power supply of chassis is working
properly.
In unframed mode there is AIS alarm after connecting the fiber
Answer: In unframed mode the AIS alarm indicator will be steady on when optical
interface receives AIS. It may be caused by E1 line intermit .If the line works normal,
please check the following conditions: V.35 interface of remote site device does not
connect to router, remote router is powered off or V.35 interface of remote router is
shutdown. When work with few venders’ router, there maybe yellow steady on or
interval on, but they can communicate with each other. It is because few remote
routers will send AIS when there is no data transporting. If this exceptional
phenomenon doesn’t affect communication please ignore it.
V.35 Interface Data channel alarm
Answer: If there is LOF and CRC alarm please check the line quality, clock mode,
framed mode and etc. You can use the internal error code test function and loopback
function to check the device and the line.
Enable loopback function, using the internal error code tester and power on,
but the status of PWR/PAT is not stable.
Answer: Firstly make sure that the connection of optical interface is normal and there
is no error code, and then make sure there is no loopback configuration on remote
site equipment. In the first 15 seconds after being powered on, the local and remote
equipments will change information with each other, so the unstable indicator is
normal. Please wait for some moments and then judge error code status according to
PWR/PAT indicator.
PRI of network management and DIP-switch
Answer: CPU will read the DIP-switch configuration when it is powered on, and then
network management has higher privilege. (Notice that network management cannot
configure Fault-Pass function)
Severe Packet Loss
Answer: This may be caused by the following conditions:
There is more than one clock source in the network;
Check the status of router’s V.35 interface, if there is RX/TX data error, please adjust
RX CLK phase of local and remote device.
